I do run Andys error jump plug-in. It is brilliant and saves a lot of donkey work on the site. As Andy points out, it sends the admin an email stating what the problem is, and, the link number then and refers the unlucky user to an error page. It simply is a script that saves the need to have users refer a bad link to admin, which most possibly will not. And Andy - the ability to send an email to the site owner as well would make your script brilliant.

I have not seen the script from our German friend - however there would be most definitely a call for this script if you have a database of valid owners of links. I sadly, do not have that - mine are imported from dmoz recently. The value of this one is obvious to me.The offshoot as I see it is every plug-in that does the administration for you is worth its weight in gold.

Hope this helps some in decision making

Paul